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5/8 inch x 9 inch Hex Cap Screw Grade 8 Plain Steel (Quantity: 1 pcs) 5/8-18 x 9 Hex Bolt/Fine Thread/Partially Threaded 1.75 inches of Thread
€ 40
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Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Experience unmatched strength and reliability with our Grade 8 Hex Cap Screws, built for durability and precision.
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What Stands Out
Product Details
- A grade 8 bolt is stronger than the more commonly used grade 5.
- Grade 8 Steel
- Fine Thread / Partially Threaded 1.75 inches of Thread
- Manufactured to ASME B18.2.1 & SAE J429 specifications
- Tensile Strength: 150,000 psi. min, 1/4 – 1.5 inch diams)
| Thread Size | 5/8"-18 (14777.7 cm) |
| Exterior Finish | Unfinished |
| Manufacturer Grade | Grade 8 |
| Screw Head Style | Hex |
| Fastener Type | Hexagon Bolt |
| Thread Type | Unc |
| Thread Style | Right Hand |
| Item Hardness | Grade 8 |
| Head Type | Hex |
| Grade Rating | Grade 8 |
| Drive System | External Hex |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Finish Types | Unfinished |
| Item Diameter | 0.63 Inches (1.6 cm) |
| Size Name | 5/8-18 x 9 inch (14777.7 cm) |
| Fastener Size | 5/8-18 x 9 inch (14777.7 cm) |
| Thread Coverage | Partially Threaded |
| Brand | Ecom Fasteners |
| Manufacturer | Ecom Fasteners |
| Number Of Items | 1 |
| Part Number | E451136-1 |
| Unit Count | 1.0 Count |
| Material | Alloy Steel |
| Head Style | Hex |
| Item Weight | 0.8 lbs (360 grams) |
Who Should Buy?
-
Heavy Machinery
Ideal for heavy machinery applications requiring high strength and durability in fastening components under extreme conditions.
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Automotive Repairs
Perfect for automotive repair enthusiasts looking for reliable fasteners to secure parts under high stress.
-
Construction Projects
Great for construction projects needing robust connections where strength and stability are critical for safety.
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Lightweight Applications
Not suitable for light-duty tasks where high-grade strength isn't necessary, as it may be overkill.
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Corrosion-Prone Environments
Plain steel may rust in damp conditions; not ideal for outdoor or marine settings without additional protection.
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DIY Crafts
Excessively strong for small DIY projects, which typically require lighter and easier-to-handle fasteners.
Product Description
Customer Questions & Answers
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Question:
What is a 5/8 inch x 9 inch hex cap screw used for?
Answer: A 5/8 inch x 9 inch hex cap screw is used for securing components in various applications, such as construction, automotive, and machinery parts. Its design allows for significant load-bearing capability due to the Grade 8 rating, making it ideal for heavy-duty environments. The hex head facilitates easy tightening and loosening with standard tools, while the fine threads provide better grip and stability in precision-engineering tasks or high-stress situations. -
Question:
What material is the hex cap screw made from?
Answer: The hex cap screw is made from plain steel, which offers excellent strength and durability. Plain steel is advantageous in settings where corrosion isn't a major concern. Additionally, because it is Grade 8, it exhibits superior tensile strength, lending itself well to high-load applications. This makes it suitable for use in heavy machinery, automotive frameworks, or structural components where robustness is necessary. -
Question:
What does Grade 8 mean in the context of hex cap screws?
Answer: Grade 8 denotes a high-strength steel fastener that is rated to withstand extensive loads, specifically capable of handling up to 150,000 psi of tensile strength. It typically features a 4.6 to 4.9 hardness on the Rockwell scale. This makes Grade 8 hex cap screws ideal for critical applications in industries such as construction, transportation, and manufacturing, where safety and reliability are paramount. -
Question:
Is this hex cap screw suitable for outdoor use?
Answer: While a plain steel hex cap screw provides remarkable strength, it is not inherently resistant to corrosion and rust when exposed to moisture. For outdoor applications, consider using galvanized or stainless steel fasteners for added corrosion resistance. However, if your project is in a dry environment or can be protected from the elements, this hex cap screw will perform reliably. -
Question:
How do you determine the proper length of a hex cap screw?
Answer: Selecting the correct length for a hex cap screw involves assessing the materials being joined and the required clamping force. The length must accommodate the thickness of the materials, plus any additional space for thread engagement. In this case, a 9-inch length provides appropriate clamping for applications involving thicker assemblies or those needing extended reach, thus enhancing fastening strength. -
Question:
What tools are needed to install a 5/8 inch hex cap screw?
Answer: To install a 5/8 inch hex cap screw, you'll typically require a wrench or socket that fits the hex head. Additionally, a torque wrench may be needed to ensure that the fastener is tightened to the correct specifications for the application. These tools enable secure installation while preventing damage to the screw head or the surrounding materials during use. -
Question:
Can you use this hex cap screw for machine assembly?
Answer: Yes, the 5/8 inch x 9 inch hex cap screw is ideal for machine assembly due to its fine threads and solid construction. It ensures a tight fit, which is crucial for machinery that experiences vibrations and mechanical stress. When applying this screw in machine assembly, it guarantees reliable performance crucial for operational safety and efficiency. -
Question:
What does 'partially threaded' mean in this context?
Answer: A 'partially threaded' hex cap screw features both a shank and a threaded section, allowing for both strong fastening and flexibility in spacing. The partially threaded design provides the advantage of a smooth section that helps align parts more easily during assembly while offering a gripping area where needed. This is particularly beneficial in applications requiring clamping but not continuous threading through all materials. -
Question:
Where can I buy a 5/8 inch x 9 inch hex cap screw?
Answer: You can purchase a 5/8 inch x 9 inch hex cap screw from Ubuy. They offer a variety of fasteners, including high-quality Grade 8 plain steel options. Ubuy provides a user-friendly platform for product search and selection, making it convenient for you to find the right parts to complete your projects.
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
€ 40
Order now and get it around Friday, July 10
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Features & Benefits
- High-quality Grade 8 Hex Cap Screws for superior strength.
- Tensile strength of 150,000 psi for heavy-duty applications.
- Manufactured to strict ASME and SAE specifications.
- Fully threaded design ensures a secure fit.
- Pack of 25 provides excellent value for your projects.
- Ideal for various industrial and construction uses.


